Improvement in tubes for steam-radiators



N111. BUNDY; vTubafo'r Steam-Radiators.

jy. m9111011 my 30,1872.

M7477@ a a inde'pendent device or pipe.

NnLsoN n. BUNDY, or Nnw YORK, N; Y.

IMPROVEMENT IN TUBES FOR STEAM-RAD-IATORS.

Specification forming ,part of Letters Patent No. 130,013, datedJuly 30,1872.

Specification describing an Improvement in Tubes for Steam Radiators andCondensers, the invention of NELsoN H. BUNDY, ofthe city, county, andState of New York.

The object of this invention is to provide for the circulation of steamthrough upright radiator-pipes without the introduction of any To thisend it consists in a radiator or condenser pipe cast with separatepassages, a connecting-web, and a communication between said passages atthe ends thereof, whereby the desired end is attained and increasedradiating-surface is produced.

In the accompanying drawing, Figure l is a partly-sectional sideelevation of a radiator in which my improved pipes or tubes are used;and Fig. 2 is a top view of the same, also partly in section.

Similar letters of reference indicate corresponding parts in bothfigures.

A is the base of the radiator, and B B are the upright pipes whichconstitute my invention. The former is of ordinary form, hollow, andprovided at one end with an inlet, D, and at the other with an outlet,E. The pipes B B are of circular form at the lower ends cl, and arethere screwed into or otherwise secured to the base A. Just above thebase each bifur-` cates, separating into two longitudinally-parallelbranches or passages, a a, whose outer sides present, in theirtransverse section, concentric arcs of a circle having the same centeras the circular portion d of the pipe. The inner or adjacent sides ofthe passages are of the form of two reversed arcs,slightly atter thanthose forming the outer sides of said passages. An ellipsoidal shape isconsequently given to the passages, and a very large amount ofradiating-surface thereby obtained. The two passages are connectedthroughout their entire length in the casting by a web., Z), andcommunicate with each other, at their 'upper ends, through a curvedcommunication, c, the pipe there rounding off in the form of asemicircle. The lower ends of the said passages open into circular lowerends of the pipes, which t into sockets provided for them in the top ofthe; base. The upper ends of the pipes may be covered with a top, C, it'desirable.

The steam, entering each pipe, passes up one passage, c, through thecommunicationc, and down through the passage a., and is thereby made tocirculate thoroughly. On account ot' the shape of the. passages a agreater radiating-surface is given to the pipes than those of ordinaryform have.

What I claim as my invention is The radiator or condenser pipe, castwith separate passages, a a, connectingweb b, and communication (c)between the passages at one end thereof, substantially as hereinspecified.

NELSON H. BUNDY.

Witnesses:

`DAvrn L. WILLIAMs,

ABNER A. GRIFFING.

